I was at this presentation by Mark and feel that it is a must see. I also went went to the private, full day, lecture he gave. Mark is doing The Great Work and trying to let people know what the hell is happening on earth, help yourself and take a look...
Oh, by the way, are you looking for a decentralized exchange?
Try BitShares!
https://wallet.bitshares.org/?r=staticinstance
Made by the creator of Steemit and EOS!